04. Updated Forest Mitigation Agreement with the Metro Flood Diversion Authority

13 clayey soil. Along the river, the mapped soil is listed as Wahpeton silty clay (I451D), which is described as being found on 1-15% slopes and occasionally flooded. The major components are listed as Wahpeton (35%), which is a moderately well drained, non-hydric clayey soil, and Cashel (25%), a somewhat poorly drained, non-hydric loamy overflow soil. This property would provide additional riparian buffer benefits to the Red River system. The sloped areas adjacent to the river would be planted using the Bank Stabilization strategy (orange polygon, approx. 0.1 acres) and transition into Floodplain Forest strategy (green polygon, approx. 7.9 acres) farther from the river for the remainder of the site. Site 42 – OIN 876, 1885, 9416, 9424, 9425, 9428, 9429, 9430, 9437: This is a conglomerate of former building sites/flood buyout properties, located adjacent to the Red River of the North and measures approximately 22.9 acres. Approximately half of this site falls within the 10-year flood inundation boundary, and the majority of the site is comprised of Wahpeton silty clay (I451D), which is described as being found on 1-15% slopes and occasionally flooded. The major components are listed as Wahpeton (35%), which is a moderately well drained, non-hydric clayey soil, and Cashel (25%), a somewhat poorly drained, non-hydric loamy overflow soil. In the northern portion of the property, there is Cashel silty clay (I293B), which is found in 0-6% slopes and occasionally flooded. The major soil component (80%) is Cashel, a loamy overflow that is non-hydric, but somewhat poorly drained. This parcel would provide additional riparian buffer benefits to the Red River system. The entire site will be planted using the Floodplain Forest strategy (green polygon). Site 43 – OIN 249 and 251: This site is located adjacent to the Red River of the North and measures approximately 18.9 acres. Only a narrow portion of the site falls within the 10-year flood inundation boundary, and the majority of the site is comprised of Wahpeton silty clay (I248A), which is described as being found on 0-2% slopes and occasionally flooded. The major component (70%) is listed as Wahpeton, which is a moderately well drained, non-hydric, clayey soil. The second most abundant soil type is Wahpeton silty (I248B) which is described as being found on 2-6% slopes and occasionally flooded. The major component (80%) is listed as Wahpeton, which is a moderately well drained, non-hydric, clayey soil. The third most abundant soil type is found along the southern portion of the site and is mapped as Fluvaquents (I16F). It is described as a frequently flooded hapludolls complex, found on 0-30% slopes, very poorly drained and hydric. The entirety of this site will be planted using the Oak Savanna strategy (blue polygon). 6.3 Site Summary As stated above, project impacts will occur in both North Dakota and Minnesota. Mitigation in each state will be proportional to the number of impacts resulting from construction. A summary of forest impacts and the required mitigation can be found in Table 1 above and show a total need of 270.8 acres in North Dakota, and 32.4 acres needed in Minnesota. The OHB Site and Oxbow Country Club Restoration sites result in 13 and 63.1 acres of new forest, respectively in North Dakota. The tree plantings at these two sites were designed to fulfill a portion of the forested acreage needed, leaving an additional 194.7 acres in North Dakota.